USPC 244/26

LTA/helicopter

Airship and helicopter sustained:

This subclass is indented under subclass 24. Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation or vertical lift by means of screw propellers arranged to develop a substantial component of thrust in a vertical direction.
(1) Note. For helicopters having also sustaining wings, see this class, subclass 6.

(2) Note. For helicopters without airplane wings, see this class, subclasses 17.11+.

Patents in category USPC 244/26

• Patent US-1870-99629 (Applicant person: Martin Braun, Filing date: 1867-08-01)
• Patent US-1880-235792 (Applicant person: John Finlayson Mackenzie, Filing date: 1880-10-13)
• Patent US-1883-311885 (Applicant person: Eugene F. Falconnet, Filing date: 1883-11-08)
• Patent US-1889-399271 (Applicant person: Charles Aug. Künzel, Filing date: 1888-06-28)
• Patent US-1893-507609 (Applicant person: Carl Friedrich Billwiller, Filing date: 1893-04-20)
• Patent US-1893-504631 (Applicant person: Emory B. Sowers, Filing date: 1893-04-28)
• Patent US-1895-542100 (Applicant person: Estanislao Caballero de los Olivos, Filing date: 1894-12-11)
• Patent US-1898-610843 (Applicant person: Thomas J. Brown, Filing date: 1897-03-26)
• Patent US-1899-659264 (Applicant person: Charles Stanley, Applicant firm: Stanley Aerial Navigation Co., Filing date: 1899-08-07)
• Patent US-1904-764198 (Applicant person: James Drayton McFarland, Jr. • John Bruckman, Filing date: 1900-07-23)
• Patent US-1903-723636 (Applicant person: John Berry, Filing date: 1902-03-03)
• Patent US-1904-762273 (Applicant person: Samuel T. Best, Filing date: 1903-01-24)
• Patent US-1907-853542 (Applicant person: Hermann Faehrmann, Filing date: 1903-04-02)
• Patent US-1905-798007 (Applicant person: William Chauncey Branch, Filing date: 1904-08-08)
• Patent US-1909-914782 (Applicant person: Louis-Auguste Becht, Filing date: 1905-05-08)
• Patent US-1906-872334 (Applicant person: Aurelio Sabin Fadda • John di Lorenzo, Filing date: 1906-12-17)
• Patent US-1907-888267 (Applicant person: Julius Charles Sandrik, Filing date: 1907-11-01)
• Patent US-1908-895672 (Applicant person: Ole C Olsen, Filing date: 1907-12-12)
• Patent US-1909-932712 (Applicant person: Enoch S Le Fevre • William David Le Fevre, Filing date: 1908-02-20)
• Patent US-1908-931225 (Applicant person: Reinhold Schmiechen, Filing date: 1908-09-16)
• Patent US-1910-957205 (Applicant person: Rudolf Gendts, Filing date: 1909-04-29)
• Patent US-1910-994202 (Applicant person: Gustav Scheel, Filing date: 1910-06-17)
• Patent US-1911-1008761 (Applicant person: Rufus Clayton White, Filing date: 1910-10-21)
• Patent US-1912-1028971 (Applicant person: Marion L Shackleford, Filing date: 1910-12-24)
• Patent US-1913-1052803 (Applicant person: Fernand D'Orbessan, Filing date: 1911-09-05)
• Patent US-1917-1239942 (Applicant person: Herbert G. Nelson, Filing date: 1916-10-20)
• Patent US-1887-362605 (Applicant person: Peter Carmont Campbell, Filing date: 1969-12-31)

Enclosing categories	USPC 244/24
Subcategories
Keywords	LTA, Helicopter
Start year
End year